Gas engine



June 30, 1925.

E. P. STARY GAS ENGINE Filed Sept, 10, 1920 4 Sheets-Sheet 1 witness June 30. 1925.

E. P. STARY GAS ENGINE Filed Sept. 10, 1920 4 Sheets-Sheet 2 H r o Em X. STA

June 30, 1925. 1,543,803

E. P. STARY GAS ENGINE Filed Sept, 10 1920 4 Sheets-Sheet 3 Wm, EM. PST/5&7

June 30, 1925- E. P. STARY GAS ENGINE Filed Sept 10 1920 4 Sheets-Sheet 4 O 9 IO 8 124 23 22 q /{Z/ I Q as U avwento'a Em V. Swy.

witness dum Patented June 30, 1925.

UNITED STAT EIHIL P. STARY, F CEDAR RAPIDS, IQWA.

GAS ENGINE.

Application filed September To all whom it may concern:

Be it known that I, EMIL P. STARY, a citizen of the United States,residing at Cedar Rapids, in the county of Linn and State of Iowa, have invented a new and useful Gas Engine, of which the following is a specification.

This invention differs from internal combustion engines as heretofore constructed in, that, the pistons are caused to travel twice inward and twice outward to every revolution, thus providin a stroke of the piston for drawing the charge of gas into the cylinders, a stroke for compression, a stroke for combustion and a stroke for discharging the burnt charge from the cylinders for every revolution of the engine.

"The primary object of the invention is to provide novel means for preventing the withdrawal of the pistons from the cylinders to cause the cylinders to rotate.

A further object of the invention is to provide an engine of this character which will be exceedingly smooth in its operation, 25 and one in which the fuel consumption is reduced to a minimum.

With the foregoing and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without de parting from the spirit of the invention.

Referring to the drawings Figure 1 illustrates a side elevational View of an engine constructed in accordance with the resent invention.

Figure 2 illustrates a fragmental sectional view of one of the valve members constructed in accordance with the present invention.

Figure 3 illustrates a sectional view through the engine, and

Figure 4 illustrates a sectional view taken at right angles to Figure '3.

Figure 5 illustrates a fragmcntal detail view disclosing the relation of the exhaust O with the engine.

Referring to the drawings in detail, the reference character 5 designates the supports for the engine, which are disposed at oppo- 10, 192.0. Serial No. 19,446.

site ends of the engine, the support being provided with securing means indicated at 6, whereby the engine may be secured to a supporting member.

Each of the sup orts includes a bearing member 7, one of t 1e bearings having connection with the supporting collar 8, which in turn has connection with the hollow shaft 9 through the medium of the bolts 10, the hollow shaft 9 being of a length to extend an appreciable distance within the engine housing to be hereinafter more fully" described.

This hollow shaft 9 sn ports the cam ring 11 on which are integral, y formed the cams 12, the cams being arranged to operate the valve members 13 which control the passage of fuel to the cylinders, and which are operated by means of the valve stems 13 contacting with the cams 12, the cams bein timed to operate the Valves at predetermined intervals to cause the smooth and easy running of the engine.

The engine also includes a housing indicated at 14, which is keyed to the main shaft 15, as by means of the key 16, a portion of the housing operating between the Hang-e518 of the member 19,"thus insuring a leak-proof connection between the rotary housing and stationary members of the engine.

A plurality of cylinders indicated at 20, are carried by the housing, and are arranged in suitable spaced relation with each other, each of the cylinders being provided with an integral intake pipe indicated at 21, there being provided the valve members 13" operating in the pipes 21 for controlling the passage of fuel to the cylinders.

These intake pipes 21 are in communication with the intake manifold indicated at 22, which has communication with a suitable carburetor, not shown, and which directs the fuel to the compartment 23 disposed between the intake pipes 21 and intake manifold '22 to provide communication between "the intake manifold and intake pipes.

Secured to the hollowshaft 9, as at 24, is the stationary cam-formed trackway '25, which trackway accommodates the rollers 26 carried on the ends of the pivoted members 27 which are rotatable with the housing and cylinders, the arms having pivotal connection with the housing as at 30.

These members 27 are substantially triangular in formation and also have pivotal connection with the connecting rods 31, through thearms' 31', which "turn have pivotal connection with the pistons 32, "so that movement of the pistons 32 will result in a relative movementiof the members27 and rods 31. These arms 27 also have pivotal connection with connecting arms 29, as at 28, so that movement of the members results in relative movements of the pistons to which said connecting arms 29 are pivotally connected will result in movement of rod 29. I I

An apron 33 is carried by' theforwar'd portion of each of the cylinders, "and, secured thereto as by means of the bolts 34:, the aprons being curved and of lengths to embrace portions of the adjacent cylinder,

there being stops 35 carried by each of these aprons, the stops being disposed adjacent to the rear ends of the cylinders, and'within the'path oftravel of the pistons to restrict movement of the pistons and prevent ,them from passing from thef cylinders, during the explosion strokes thereof. Each of the cylindersfhas communication with the exhaust pipe 36 through the manifold 37, so that the exhaust from'the cylinders may be carried off to a position remote'from the cylinders, the valves 13 being timed to open when the cylinders pass the exhaust pipe 37, to permit the exhaust to pass outwardly from the cylinders. In the operation of the device, as suming that the pistons are in positions as indicated by Figure 3 ofthe drawings, it will be seen that the piston indicated byiletter I B is at the point of its travel where the charge is, undercompres'sion, the spa k being set to ignite the charge at thispoint. In this position the roller 26 abuts against the face of the cam formfed track- ,way 25, so thatv whenthe explosion takes place in this cylinder, thelpiston is held against withdrawal from its;cylinder, and the latter is thereby caused to'rotate t This rotation carries the roller 26 towards the axis ofrotation on the camformed trackway 25, the cylinder reaching the limit of its outermost-movement from the-piston just as the roller 26,reaches thepoint on the cam-formed trackI25, which is nearest the axis of rotation. The camformed track then, by reason of its cam action on the roller; 26, gradually forces the piston 32 inwardly, the piston reaching the limit of its innermost movement at the sametimethat the roller 26 reaches the. point on the cam-formed track 25, which is farthest from the axis of rotation, this inward movement of the piston discharging the burnt charge from the cylinder.

The piston 32 is gradually withdrawn from the cylinder by means 'of the connecting arm 29 which is pivoted at one end to the roller end of the member 27, and at the other end to the roller end of 'theilfollowingm'ember 27, the roller of this draws the piston from the cylinder, thereby drawing a charge into the cylinder.

The roller 26 is then gradually forced away from the axisof rotation which movement forces the piston inwardly thereby compressing the charge, the charge being fully compressed just as the roller 26reaches the point on the cam-formed track 25 which is farthest from the axis of rotation at which point the compressed chargeis ignited and the above describedoperation is repeated. i

I It might be further stated that when the revolving cylinder, reaches the point in its travel where the piston begins its inward movement to discharge the burntcharge the outlet valve 13 is forced open by reason of its push-rod 13 being carried in contact with the stationary cam 12 and closed by the spring 12 when the push-rod 13' clears the cam at the point where the piston has reachedthe limit of its inward stroke, the burntchargebeing thus forcedthrough the outlet valve 13, thence through the passageway 36 and manifold 37 into the exhaust 'pipe' 36'. The cylinder now" being 'at the pointin its travel where the piston begins itsoutward movement, the inlet valve is forced open by its push-rod 13 being brought into contact with a cam 12, the withdrawing piston, thus drawing a charge of gas from the carburetor through the manifold 22 and passage-way '22 leading to the opened inlet valve 13, which is closed by its spring 12 at the point where the piston has'reached the limit of its outward movement, by reason of its push-rod 13 clearing the camf12, at this point. I The piston then compresses the "charge which is ignited and the operation repeated, as aboi'e described. v, I I Having thus described the invention, what I is claimed asnew is I In an internal combustion engine, a support, a stationary hollow shaft mounted on the support, a cam mounted on the hollow shaft, a shaft mounted within thefhollow shaft, a housing keyed on the last mentioned shaft to revolve therewith, cylinders carried bythe housing, substantially triangular pivoted members mounted within 'the housing,

pistons having rods operating in'the cylinders, arms having connection with the pivoted members, a roller'mounte'd on each pivoted member and adapted to move over the In testimony that I claim the foregoing cam, arms for connecting adjacent trianguas my own, I have hereto afiixed my signalar pivoted members, arms for connecting ture in the presence of two Witnesses.

the pivoted members and piston rods, and EMIL P. STARY.

I said pivoted members adapted to move the \Vitnesses:

rollers into engagement with the cam to J. ELMER STRAUSS, rotate the housing. ETHELYN M. SCO'I'I. 

